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  • Algorithm to Determine the Volume and Shape of Constant Orientation Workspace for a 2(3-RRPS) Parallel Robot
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-25
    Mario A. García-Murillo; Diego A. Núñez-Altamirano; Jaime Gallardo-Alvarado; Roger E. Sánchez-Alonso

    This article describes a geometrical method used to analyze the workspace for parallel robot 2(3-RRPS). The algorithm, implemented in a CAD software, determines the workspace for a constant orientation. Mechanical restrictions of the robot and its influence in the workspace are considered. Actuator stroke, angular stroke of the joints in the base, angular travel of the ball joints on the platform,

    更新日期:2020-05-25
  • Seizing Requirements Engineering Issues through Supervised Learning Techniques
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-25
    María Guadalupe Gramajo; Luciana Ballejos; Mariel Ale

    In recent years, the popularity of machine learning techniques has grown due to the availability of larges volumes of data and the increased processing capacity of computers. Despite the inherent value of these techniques, few studies have attempted to summarize how machine learning algorithms, especially supervised learning have contributed to task automation and resolving challenges in Requirements

    更新日期:2020-05-25
  • Finding Good Compilation Plans: A Strategy to Enhance an Adaptive Optimization System
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-25
    Adriano Ferrari Cardoso; Caio Henrique Segawa Tonetti; Anderson Faustino da Silva

    An important component of virtual machines is the adaptive optimization system, which decides what methods to optimize and what compiler optimization set to enable. In this context, this paper presents the development of an auto-tuning adaptive optimization system (a strategy to find good compiler optimizations), in order to obtain the best possible performance; that is, the reduction of runtime. Such

    更新日期:2020-05-25
  • A Solution for Dynamic Management of User Profiles in IoT Environments
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-25
    Valderi Leithardt; Douglas Santos; Luis Silva; Felipe Viel; Cesar Zeferino; Jorge Silva

    Internet of Things (IoT) is an emerging area in which we expect to have billions of devices connected to the Internet by 2020. IoT applications can offer many benefits to environments, society, and the economy through the interconnection and cooperation of smart objects. However, there are many privacy challenges, such as authentication, authorization, and confidentiality of personal data. With this

    更新日期:2020-05-25
  • Low-Frequency Underwater Wireless Power Transfer: Maximum Efficiency Tracking Strategy
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-25
    Israel Filipe Lopes; Rodolfo Lacerda Valle; Gabriel Azevedo Fogli; André Augusto Ferreira; Pedro Gomes Barbosa

    This paper proposes a strategy to improve the efficiency of a low-frequency Wireless Power Transfer (WPT) system used to charge the battery of an Autonomous Underwater Vehicle (AUV) through an Inductive Power Transfer (IPT). The IPT system uses a Split-Core Transformer (SCT) to transfer power from the docking base to the AUV, without electric contact. Under gap variation, the efficiency is changed

    更新日期:2020-05-25
  • A Smoothing Optimization Approach Applied to the Supervised MDS Method
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-25
    Vinicius Layter Xavier; Maculan Nelson; José Francisco Moreira Pessanha

    This paper presents an efficient approach to the Supervised MDS method. This method handles the problems of data visualization, supervised classification and bipartite ranking. In order to overcome the non-differentiable nature of the Supervised MDS method, the mathematical formulation proposed in this work is based on the hyperbolic smoothing technique. The performance of the algorithm is evaluated

    更新日期:2020-05-25
  • Instance Genetic Selection for Fuzzy Rule-based Systems Optimization to Opinion Classification
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-25
    Tayane Leite Cerqueira; Fabiana Cristina Bertoni; Matheus Giovanni Pires

    Opinion Mining aims to identify people feelings about some item of interest based on content available on the Web, without the user having to find and read all the news about it. As opinions are related to feelings that are often described by imprecise terms, Fuzzy Systems appear as an alternative to treat the information subjectivity. An important task in developing Fuzzy Systems is define the rule

    更新日期:2020-05-25
  • Resource Allocation in f-OFDM Wireless Networks with Delay Estimation Using Service Curve and Envelope Process
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-25
    Marcus Vinícius Gonzaga Ferreira; Flávio Henrique Teles Vieira

    In this paper, a resource allocation algorithm for wireless communication systems is proposed, which considers the channel transmission quality and data delay. In the proposed approach, the delay value is estimated to decide on the allocation of available radio resources, aiming to reduce the system’s average delay. For the delay estimation, an approach involving concepts of Network Calculus such as

    更新日期:2020-05-25
  • Naturalistic Programming: Model and Implementation
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-25
    Oscar Pulido Prieto; Ulises Juárez Martínez

    Naturalistic programming is defined as a programming technique that uses abstractions whose expressiveness is close to natural languages. The objective is preserving as much as possible the needs of the client in their language, while the text of these needs is simultaneously the requirements specification and the program source code. Consequently, the goal of the naturalistic paradigm is reducing

    更新日期:2020-05-25
  • Automatic Evolution of Eco-Efficient Software Architectures with CVL Models
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-25
    José Miguel Horcas; Mónica Pinto

    Resource sharing and mass storage in server farms provided by cloud platforms save huge amounts of energy. However, optimizing energy consumption at the server room is not enough, being desirable to perform energy optimization of cloud services at the application level. In cloud computing a tailored configuration of services is deployed for each client (tenant), requiring different energy consumption

    更新日期:2020-05-25
  • Transient stability constrained optimal power flow based on trajectory sensitivity for power dispatch of distributed synchronous generators
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-25
    Pablo Leandro Chen Wieler; Roman Kuiava; wagner Felipe Santana Souza

    This paper is focused on the transient stability constrained optimal power flow (TSC-OPF) problem and its application for determining the optimal dispatch of active and reactive powers of distributed synchronous generators. In order to deal with uncertainties related to the actual active and reactive load values and the network topology configuration, this paper proposes a TSC- OPF formulation that

    更新日期:2020-05-25
  • Visual Control Law Tuning Using the JADE Algorithm Applied to Leaf Detection and Cutting
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-25
    José Guillermo Cebada Reyes; Petra Wiederhold; Pablo Sánchez Sánchez; Irineo Lorenzo López Cruz

    In the propagation of plant tissue in vitro it is necessary to obtain from the leaf a circular section cut. In order to achieve this type of cuts the visual feedback is used, allowing us to analyze the RGB planes to detect the green color and find the image centroid. In order to fulfill the cut objective a PD+ control is used with self-tuning based on the adaptive differential evolutionary algorithm

    更新日期:2020-05-25
  • BRAPT: A New Metric for Translation Evaluation Based on Psycholinguistic Perspectives
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-25
    Rafael Guimarães Rodrigues; Kaio Tavares Rodrigues; Rodrigo Reis Gomes; Lilian Ferrari; Eduardo Ogasawara; Gustavo Paiva Guedes

    There are some metrics to evaluate automatic text translations in the literature. However, the state-of-the-art of these metrics still has limitations. One of them is the dependence of an exact and ordered pairing of words for evaluating similarity among texts. Another, is the non-consideration of the semantics of the text in such comparison. Previous studies point out the need to analyze the semantics

    更新日期:2020-05-25
  • Applied Sensor Fusion: Tuning Parameters of CF and KF by means of Evolution Strategies
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-25
    Talysson M. O. Santos; Márcio F. S. Barroso; Rodrigo A. Ricco

    From the point of view of metrology, inertial sensors acting separately present undesirable performance in the measurement of angular position. In order to provide measurements with greater precision and accuracy, the measures of each of these sensors are typically fused by means of filters. The performance parameters of these filters are hard to tune and several works have been using exhaustive search

    更新日期:2020-05-25
  • Method Applied To Animal MonitoringThrough VANT Images
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-25
    Bruno Campos de Vasconcellos; José Pedro Pereira Trindade; Leandro Bochi da Silva Volk; Leonardo Bidese de Pinho

    One of the necessary demands in extensive livestock systems is the counting of animals in areas of tens of hectares, costly when carried out manually and locally. In this context, this work proposes and discusses the efficacy of a semi-autonomous, non-invasive method for remote identification of animals in the field, applicable to precision livestock systems. The method was conceived from an exploratory

    更新日期:2020-05-25
  • Satellite Remote Sensing of Forest Degradation using NDFI and the BFAST Algorithm
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-25
    Erith Muñoz; Alfonso Zozaya; Erik Lindquist

    In this paper, results related with the assessment of the capabilityto detect forest degradation by analyzing NDFI time series through the BFAST algorithm are presented. Recent studies have shown the potential of the BFAST algorithm applied to a time-series of satellite-derived spectral indices such as NDVI or EVI to detect unambiguous and subtle perturbations of the forest cover canopy both positive

    更新日期:2020-05-25
  • Design of electromagnetic band gap media based on crank-like chiral structures
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-25
    Ángel J. García-Collado; Gregorio J. Molina-Cuberos; Óscar Fernández Fernández; José Margineda Puigpelat

    A new EBG (Electromagnetic Band Gap) structure with chiral crank elements is presented and its effects on the electric field propagation along a microstrip line are analysed and compared with the effects produced by mushroom-type inclusions. Chiral crank inclusions are distributed along both sides of the strip and the corresponding results are compared with those obtained by other elements commonly

    更新日期:2020-05-25
  • Dynamic Adaptive Protection based on IEC 61850
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-25
    Vinicius Ferrari; Yona Lopes

    In electrical power systems, the overcurrent relays (ANSI/IEEE 50/51) are widely used for protection, and it is one of the main alternatives for identifying system faults. In radial systems supplied by a single source, protection and selectivity can be achieved using the traditional techniques based on time-current curves coordination. However, in a system with multiple sources and operational conditions

    更新日期:2020-05-25
  • Deep Neural Network Architecture: Application for Facial Expression Recognition
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-25
    Moises Garcia Villanueva; Salvador Ramirez Zavala

    There are great challenges to build a model or architecture in Deep Learning and integrate it into a real-time application. One of these challenges is the construction or acquisition of large quality datasets (thousands or millions of objects). Another one is to have great computing potential for the architecture learning process. Finally, efficient architectures are needed for the design of deep neural

    更新日期:2020-05-25
  • Evolutionary Approach for Automatic Generation of Multi-Objective Morphological Filters for Depth Images in Embedded Navigation Systems
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-25
    Antonio Miguel Batista Dourado; Emerson Carlos Pedrino

    The efforts spent on the development of assistive technologies has led researches to explore many existing techniques as computer vision, image processing, etc. and apply them as embedded solutions to help people with several types of disabilities, including visual impairment. Embedded navigation systems for visually impaired people (VIP) often use RGB-D cameras to retrieve depth information from surroundings

    更新日期:2020-05-25
  • A Literature Review on Embedded Systems
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-04
    Luciana De Micco; Fabian Luis Vargas; Pablo Ignacio Fierens

    Embedded system design is crucial for the development of industry, technology, and science, and it is an area that has significantly grown in recent years throughout Latin America, both in academia and in industry. Embedded System (ES) refers to electronic equipment with a computing core which, unlike a personal computer, is designed to meet a specific function and is usually optimized to satisfy strict

    更新日期:2020-05-04
  • Measurement of 4G LTE Cells with SDR Technology
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-04
    Diego Gutiérrez; Francisco Giménez; Carlos Zerbini; Guillermo Riva

    Today, measurements on wireless mobile systems require specific, high-cost instruments. This hinders both its access from academia for education and research, and its widespread use by service providers for optimization of their networks. To address these problems, we present and demonstrate choices for measurement of 4G LTE access networks through open-source Software Defined Radio (SDR) tools. As

    更新日期:2020-05-04
  • Extending SMS Service Coverage in Rural Areas by using LoRa Communication Technology
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-04
    Francisco Giménez; Carlos Zerbini; Guillermo Riva

    Mobile phone services are provided by operators in cities and along the roads in rural areas. In the last case, the coverage can reach a few kilometers far from the roads, depending on the available mobile technology. As a consequence, rural population have limited coverage or lack of message-based communication systems. In this work, we propose a solution based on low-power wide area network (LPWAN)

    更新日期:2020-05-04
  • Adaptive: An Adaptive Routing Protocol for Vehicle Delay-Tolerant Networks
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-04
    Rodrigo Freitas Silva

    The aim of this work is to propose a new routing protocol for a Delay-Tolerant Networks (DTN) called Adaptive. This protocol is based in predictable contacts concept and uses the history of meeting nodes to determine the best way to route and drop packets on network. The following performance metrics were used to evaluate the Adaptive: delivery rate, average delay and average number of hops. The Adaptive

    更新日期:2020-05-04
  • Implementing Cryptographic Pairings on ARM dual-core Processors
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-04
    Raudel Cuiman Márquez; Alejandro José Cabrera Sarmiento; Santiago Sánchez-Solano

    In this paper, we explore the parallelization capabilities of the ARM processing system embedded in a Zynq device for a software implementation of the optimal Ate pairing. First, the use of the NEON coprocessor was evaluated. It was found that on ARM v7 Cortex-A9 processors the computation of the optimal Ate pairing based on NEON does not perform better than an optimized ARM-assembly equivalent implementation

    更新日期:2020-05-04
  • Embedded tunable laser control for WDM optical communications systems
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-04
    Marvin Cristhiano Bustillos Barcaya; Gustavo Fabian Rinalde

    In this work we present the design, implementation and evaluation of an embedded control solution for a WDM tunable laser. A brief description of the tunable laser components and operation is given and the required hardware is proposed. The required temperature, power and wavelength controllers are designed placing great emphasis on response time. Additionally, we present the characteristics and configurations

    更新日期:2020-05-04
  • A Critical Embedded System Challenge: The FloripaSat-1 Mission
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-04
    Gabriel Mariano Marcelino; Sara Vega-Martinez; Laio Oriel Seman; Leonardo Kessler Slongo; Eduardo Augusto Bezerra

    CubeSats have been receiving special attention in recent years, mainly due to their agile development process, and also the low costs involved when compared to traditional satellites. In this context, this paper presents the critical embedded systems designed for FloripaSat-1, which is a complete CubeSat mission developed at UFSC, Brazil. The satellite's service module has three main subsystems, each

    更新日期:2020-05-04
  • Printed Circuit Board Design Methodology for Embedded Systems Targeting Space Applications
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-04
    Cezar Antonio Rigo; Laio Oriel Seman; Marcelo Daniel Berejuck; Eduardo Augusto Bezerra

    This paper presents an overview of the theory and main aspects involved in designing reliable printed circuit boards (PCB) for embedded systems to be used in space applications. To that end, the design and layout process of a satellite-oriented hardware architecture is described, along with an introductory text on PCB design theory, including high-speed signals, impedance control, and general good

    更新日期:2020-05-04
  • Dual-Antenna Dual-Band High Performance Cubesat-Compatible GPS Receiver
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-04
    Santiago Rodríguez; Javier G. García; Germán Scillone; Juan G. Díaz; Ernesto M. López; Ramón López La Valle

    Nanosatellites are revolutionizing the space industry allowing low-cost educational, scientific or commercial space missions. Among them, the CubeSats play a key role due to their standardization and increasingly use. As the CubeSat missions become more and more complex and challenging, so do their subsystems. In particular, the position, velocity and attitude of the satellite are commonly required

    更新日期:2020-05-04
  • Supervision system for emergency brake and traction-system isolation on train formations
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-04
    Ivan Mariano Di Vito; Pablo Martín Gomez; Ariel Lutenberg

    In the event of an emergency, railway safety systems typically work by isolating the traction-system and applying the emergency brake, causing logistic problems on the railway line where the train formation remains stopped. This paper presents the design of a supervision system that enables the train formation to be moved in a limited and controlled way to a repair workshop or to a safe place for dropping

    更新日期:2020-05-04
  • Modular system for the monitoring of railway signaling equipment
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-04
    Lucas Dórdolo; Santiago Germino; Gustavo Ramoscelli; Alejandro Permingeat; Carlos Mancón; Leandro Francucci; Adrián Laiuppa; Dario Baliña; Ariel Lutenberg

    This paper presents a modular system designed to solve some specific problems on the monitoring of railway signaling equipment. The addressed problems arose from the needs presented by Trenes Argentinos, the company which operates almost all passenger rail transport in Argentina. The developed solution is examined, consisting of an embedded system with its hardware and firmware architecture along with

    更新日期:2020-05-04
  • FPGA implementation of a critical railway interlocking system
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-04
    Menéndez Martín Nicolás; Larosa Facundo Santiago; Ghignone Ramiro Adrián; Álvarez Nicolás; Lutenberg Ariel

    An interlocking is a railway system that automatically controls that changes in routes are safely managed, avoidingtrain crashes and derailments. This article presents an analysis of the state of the art technology used in several commercial interlocking equipment. Based on this analysis, design and implementation of an interlocking system architecture in FPGA technology is proposed. Appropriate techniques

    更新日期:2020-05-04
  • Assessment of Noise Impact on Hybrid Adaptive Computational Intelligence Multisensor Data Fusion Applied to Real-Time UAV Autonomous Navigation
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-04
    Ângelo de Carvalho Paulino; Lamartine Nogueira Frutuoso Guimarães; Elcio Hideiti Shiguemori

    Recent work have successfully employed a low-cost Multisensor Data Fusion application based on Hybrid Adaptive Computational Intelligence (HACI) — the cascaded use of Fuzzy-based Computational Intelligence algorithms. The methodology has been shown able to improve considerably the accuracy of current positioning estimation systems for real-time Unmanned Aerial Vehicle (UAV) autonomous navigation —

    更新日期:2020-05-04
  • Environmental Monitoring using Embedded Systems on UAVs
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-04
    Esther Viridiana Vazquez-Carmona; Juan Irving Vasquez-Gomez; Juan Carlos Herrera-Lozada

    Nowadays, Earth is being affected by the greenhouse effect. A first step to improve the current situation is to track the involved variables under temporal and spatial sampling. In this paper, we propose an integrated system for monitoring the related greenhouse effect gasses and several environmental variables. The system has been designed to be mounted on an unmanned aerial vehicle to overcome the

    更新日期:2020-05-04
  • Low-Cost Image and Video Processing Using High-Performance Middleware in Single-board Computers with Open Internet Standards
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-04
    Carlos Alejandro Pérez; Mario Sergio Cleva; Diego Orlando Liska; Dominga Concepción Aquino; Claudio Rodrigues da Fonseca

    Image processing is becoming ubiquitous in many activities. This kind of systems use industry-standard libraries, such as OpenCV, and GPGPU techniques such as CUDA and OpenCL. Nowadays, these are being ported to many computing platforms, offering significant processing power even in devices with limited resources. However, the only model that is truly ubiquitous, is the web itself. Modern browsers

    更新日期:2020-05-04
  • A Light Implementation of a 3D Convolutional Network for Online Gesture Recognition
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-04
    Fabio Brandolt Baldissera; Fabian Luis Vargas

    With the advancement of machine learning techniques and the increased accessibility to computing power, Artificial Neural Networks (ANNs) have achieved state-of-the-art results in image classification and, most recently, in video classification. The possibility of gesture recognition from a video source enables a more natural non-contact human-machine interaction, immersion when interacting in virtual

    更新日期:2020-05-04
  • A Scalable Neuromorphic Architecture to Efficiently Compute Spatial Image Filtering of High Image Resolution and Size
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-04
    Marco Abarca; Giovanny Sanchez; Luis Garcia; Juan Gerardo Avalos; Thania Frias; Karina Toscano; Hector Perez-Meana

    In this work, we propose a spiking P neuron whichis capable of performing spatial filtering operations by using new variants of the spiking neural P systems, such as synaptic weights and rules on the synapses. The inclusion of these variants have allowed us to create a compact spiking P neuron with minimal number of synapses and low computational complexity of the spiking rules. In addition, we propose

    更新日期:2020-05-04
  • Isophote-based Low-Computing-Power Eye-Detection Embedded-System
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-04
    Cristian Emanuel Ordoñez; Eduardo Blotta; Juan Ignacio Pastore

    The eye tracking field is an area highly studied by different researchers. In addition, there are companies that offer commercial eye trackers, but they are usually economically restrictive. However, current technology allows to design embedded eye tracking systems, capable of running on low-cost hardware. This paper presents the implementation of a real-time eye-detection method that uses the properties

    更新日期:2020-05-04
  • FPGA Based Implementation of ImageZero Compression Algorithm
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-04
    Lucas Leiva; Martín Vázquez; Marcelo Tosini; Oscar Goñi; José Noguera

    The main goal of information compression is to achieve the greatest reduction possible of the volume of data. This action affects both storage and transmission. However, the most used algorithms have considerable latency and are not practical for real-world applications. In the image compression field, the situation is more complex because the resolutions are constantly increasing. Nowadays, it is

    更新日期:2020-05-04
  • Optimization of Electricity Distribution in Latin America by Using Embedded Systems
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-04
    Gonzalo Exequiel Alvarez; Juan Leonardo Sarli

    The processes regarding the generation, transmission and distribution of electricity are gaining interest at global level, due to the constant trend in increasing consumption. Because of this, significant sums are allocated for investments to improve the efficiency of these processes. However, there are a significant number of companies which, by virtue of their small scale and the problems inherent

    更新日期:2020-05-04
  • Embedded NILM as Home Energy Management System: A Heterogeneous Computing Approach
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-04
    Fernando Deluno Garcia; Wesley Angelino de Souza; Fernando Pinhabel Marafão

    This paper presents an embedded NILM engine to enable load disaggregation intelligence and explore its potential application as an energy management system. In this sense, the power meter is upgraded to a novel category called cognitive power meter. Therefore, this paper discloses a heterogeneous multiprocessing approach to attend NILM prerequisites and increase household interactivity. The proposed

    更新日期:2020-05-04
  • Multi-Sensor Embedded System with Multiple Communications Based on EDU-CIAA
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-04
    Juan Manuel Julian; Eugenio Conrado Orosco; Carlos Miguel Soria

    The argentinian CIAA project carries out the development and production of embedded systems, for educational, industrial and scientific purposes. The present work consists in designing a comprehensive embedded system based on the EDU-CIAA NXP version, for educational and applied research purposes. The hardware and software are developed in order to provide a shield of Internet of Things (IoT), providing

    更新日期:2020-05-04
  • Didactic Prototype for Teaching the MQTT Protocol Based on Free Hardware Boards and Node-RED
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-04
    Astri Edith Andrada Tivani; Roberto Martín Murdocca; Carlos Federico Sosa Paez; Julio Daniel Dondo Gazzano

    Due to the constant evolution of the technologies related to the Internet of Things and the great expansion of the protocols and devices that possibilitate their use, there is a need to enforce and to approach the study of its concepts and applications to the students of electronic engineering and technical university careers. In this work, a weather station is designed and built based on low-cost

    更新日期:2020-05-04
  • Sensor Network For Monitoring And Fault Detection In Drip Irrigation Systems Based On Embedded Systems
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-04
    Flavio Andrés Capraro Fuentes; Santiago Ramon Tosetti; Pedro Lucio Campillo

    New methodologies in precision irrigation, aimed at monitoring and controlling the irrigation based on the crop water demand, allow to improve the water use efficiency in the agricultural production process. Measuring the soil water content to determine how much and when to irrigate is one way to control the crop irrigation. This work presents the development and setup of a wireless monitoring network

    更新日期:2020-05-04
  • Human Real Time Localization System in Underground Mines using UWB
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-04
    Franco Capraro; Marcelo Segura; Cristian Sisterna

    This work proposes an improved Real Time Localization System using UWB technology, for people and asset tracking in a closed environment, particularly in underground mines. The UWB technology has demonstrated a very good performance with a localization error margin below 41 centimeters. The main objective of this work was to develop an affordable, easy to use, and scalable localization system to detect

    更新日期:2020-05-04
  • Displacement aid system for people with visual impairment using magnetic coils
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-04
    Benito Villeda Félix; José Humberto Arroyo Nuñez; Rafael Stanley Nuñez Cruz

    This article shows the development of a support system for the movement of people with visual impairments using a near field communication system, based on magnetic coils. The structure of the system consists of an embedded system attached to a smart cane, which allows the detection of a set of transmitting coils placed at the intersections of the tactile paving that people with visual impairments

    更新日期:2020-05-04
  • Failure Monitoring and Recovery System During Manufacturing Process
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-04
    Pedro Henrique Longo Parsekian; Daniel Aparecido Lopes Vieira Cunha; Flavio Yukio Watanabe; Marcia cristina Branciforti; Rafael Vidal Aroca

    Originally designed for industrial use, numerical control (CNC) machines have been increasingly present incommercial and residential environments, especially due to the popularization of low-cost 3D printers and machines with a similar control system, such as small laser cutting machines. Most of such machines are controlled by G-codes, however, open, simple and generic tools for remote control, monitoring

    更新日期:2020-05-04
  • Scheduling and Resource Planner Based on Multicriteria Method for Partially Dynamically Reconfigurable Systems
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-04
    Alejandro Nuñez Manquez; Julio Dondo Gazzano; Mario Marcelo Berón; Carlos Sosa Paez; Roberto Martín Murdocca

    Dynamically Reconfigurable FPGAs allow to accelerate the reconfiguration process downloading partial bitstreams to those areas created for that. The partial reconfiguration capability allows to share hardware resources between different tasks during the design lifecycle. In this paper we propose an algorithm based on Logic Score of preference (LSP) multicriteria decision method for floor planning,

    更新日期:2020-05-04
  • Fast Constrained Generalized Predictive Control with ADMM Embedded in an FPGA
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-04
    Vinícius Berndsen Peccin; Daniel Martins Lima; Rodolfo César Costa Flesch; Julio Elias Normey-Rico

    Constrained model predictive control (MPC) usually requires the computation of a quadratic programming problem (QP) at each sampling instant. This is computationally expensive and becomes a limitation to embed and use MPC in plants with fast sampling rates. Several special solvers for MPC problems have been proposed in the last years, but most of them focus on state-space formulations, which are very

    更新日期:2020-05-04
  • Hybrid sorting algorithm implemented by High Level Synthesis
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-04
    Luciana De Micco; Mariano L. Acosta; Maximiliano Antonelli

    This paper proposes a hybrid data ordering algorithm which executes serial and parallel instructions. The implementation of the system is presented in the Zedboard development board of Xilinx that includes a SoC (System on Chip). The design was done in high level language HLS (High Level Synthesis). It receives a vector of N elements and delivers the set of indexes of the L major elements ordered.

    更新日期:2020-05-04
  • Control System for the Synthesis of Thin Films by Pulsed Laser Deposition
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-04
    Juan Manuel Conde Garrido; Cristina Kuo; Josefina María Silveyra

    The pulsed laser ablation process is a widely used technique for thin films deposition. In this method, a pulsed laser beam focuses onto a target ablating the impact site, called spot. Since preparing the target is a highly time consuming and expensive task, the spot is generally scanned across the target’s surface. A typical pulsed laser deposition configuration has a moving mirror that scans the

    更新日期:2020-05-04
  • Fully Embedded Flow Control Device for Microfluidic Applications
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-04
    Carlos Aguilar-Avelar; Miguel Esparza; Franco Chacón; Diana Aráiz-Hernández; Brenda Soto-García; Juán F. Yee-de León; Liza P. Velarde-Calvillo; Alejandro Abarca-Blanco

    Microfluidics is a multidisciplinary field that is changing the way how biological research is being performed, enabling new applications and accelerating the existing ones. However, one of its most important drawbacks is the lack of technological tools to facilitate its widespread use. In this paper we present a new pressure and flow control device for the high-performance control of microfluidic

    更新日期:2020-05-04
  • New Methodology and Instrumental System for Floating Structures Monitoring and Analysis
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-05-04
    Miguel Ángel Cabrerizo-Morales; M.C. Rodriguez-Sanchez; Joaquín Vaquero; Alberto Rodriguez-Moreno; Susana Borromeo; Rafael Molina-Sanchez

    Floating structures are widely used in Marine Civil Engineering constructions, offshore and port operations. Safe operation of those structures requires sensing, monitoring and control systems able to deal not only with the physical parameters that affect to the system behaviour, but also with others parameters related to human interaction, since they are frequently manually operated. Any failure in

    更新日期:2020-05-04
  • Eletronic Instrumentation in Lofstrand: Dynamic Force and Attitude Monitoring
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-04-30
    Jackson Paz Bizerra de Souza; Danilo dos Santos Oliveira; Diogo de Oliveira Costa; Angélica de Oliveira Alves; José Henrique de Oliveira; Suélia de Siqueira Rodrigues Fleury Rosa

    This work provides quantitative data related to the use of Lofstrand crutches, these data are the strengthapplied on the armrest to the contact surface, the angle of the crutch relative to its axis of origin.Modular sensors of magnetometer, gyroscope and accelerometer were used. The results presented are: the dynamic force variation in the order of 0 kgf to 50 kgf was measured by the Force Sensing

    更新日期:2020-04-30
  • Algorithm For Early Threat Detection By Suspicious Behavior Representation
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-04-30
    Duber Martínez; Humberto Loaiza; Eduardo Caicedo

    The proposed early detection algorithm is justified because the probability of success to control a criminal activity increas-es when the response time for generating a warning alarm is reduced. In this paper, a video-based representation model to describe suspicious behavior from elementary actions is proposed. Such behaviors allow detecting potential threats before suspects achieve physical contact

    更新日期:2020-04-30
  • Evaluating Variability of Automatic Process Control of the Moisture Control in Medium Density Fibreboard Line, Using Statistical Process Control
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-04-30
    Mauricio Hernández; Francisco Novoa

    This paper is about the use of the Statistical Process Control (SPC) to detect problems generated by the variability inside Automatic Process Control (APC). This paper tries to find a successful tool regarding to detect values out of control in automatic system. This kind of tool afford evaluated the control strategy and will be useful for the decision makers. Statistical process control, monitoring

    更新日期:2020-04-30
  • Investigating the influence of groups of variables on the task of predicting the age of an author in blog posts
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-04-30
    Rosalvo Neto; Rodrigo Oliveira; Ana Queiroz

    The identification of the profile of users from texts on the Internet is a relevant task in the context of today's society. This activity is known in the literature as Author Profiling. Among the essential characteristics to be deduced in this task is the age. This feature is paramount, for example, for the identification of potential sexual predators in environments targeted for children. However

    更新日期:2020-04-30
  • Distribution System Operation and Expansion Planning using Network Reconfiguration
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-04-30
    Ivo Benitez Cattani; Enrique Chaparro; Benjamín Barán

    This paper presents an algorithm for network reconfiguration which could help in the operation and expansion planning of three-phase distribution systems. Considering the fact that power losses lead to decrease utility benefits, and the three-phase unbalanced voltage can damage electrical machines, the proposed algorithm is presented as a multi-objective optimization problem based on Evolutionary Algorithms

    更新日期:2020-04-30
  • A SDN/OpenFlow Framework for Dynamic Resource Allocation based on Bandwidth Allocation Model
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-04-30
    Eliseu Torres; Rafael Reale; Leobino Sampaio; Joberto Martins

    The communication network context in actual systems like 5G, cloud and IoT (Internet of Things), presents an ever-increasing number of users, applications and services that are highly distributed with distinct and heterogeneous communications requirements. Resource allocation in this context requires dynamic, efficient and customized solutions and Bandwidth Allocation Models (BAMs) are an alternative

    更新日期:2020-04-30
  • Challenges of Migrating Legacies Web to Mobile: A Systematic Literature Review
    IEEE Lat. Am. Trans. (IF 0.804) Pub Date : 2020-04-30
    Viviana Cajas; Matías Urbieta; Gustavo Rossi; Francisco Domínguez Mayo

    The multi-device era comes thanks to mobile computing which gives remote access to resources from anywhere changing the people’s life and opening new business opportunities. However, the legacy systems do not render the content properly in mobile devices because they were thought to be only compliant with Web browsers. Economic availability is often the reason why these have not been modernized. This

    更新日期:2020-04-30
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